5681913 has 4 divisors (see below), whose sum is σ = 7575888. Its totient is φ = 3787940.

The previous prime is 5681911. The next prime is 5681933. The reversal of 5681913 is 3191865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5681913 - 2¹ = 5681911 is a prime.

It is a D-number.

5681913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5681911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946983 + ... + 946988.

It is an arithmetic number, because the mean of its divisors is an integer number (1893972).

Almost surely, 2^5681913 is an apocalyptic number.

It is an amenable number.

5681913 is a deficient number, since it is larger than the sum of its proper divisors (1893975).

5681913 is a wasteful number, since it uses less digits than its factorization.

5681913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893974.

The product of its digits is 6480, while the sum is 33.

The square root of 5681913 is about 2383.6763622606. The cubic root of 5681913 is about 178.4424564808.

The spelling of 5681913 in words is "five million, six hundred eighty-one thousand, nine hundred thirteen".